westberg



(No Model.) 3 Sheets-Sheet l.

- C. A. WBSTBERG.

SAFETY ATTACHMENT POR ELEVATORS.

- Patented Mar. 2,0,.188@

lIlIlllIl/llllll (No Model.) 3 sheets-sheet .2.V

C. A. WESTBERG.

SAFETY ATTACHMENT FOR ELEVATORS.,

g Patented Mar. 30, .1886.

3 Sheets-Sheet 3.

(No Model.) I

o. AWBSTBERG. SAFETY ATTACHMENT POR BLEVATORS. No. 339,035. Patented Mar. 3o, 1333 ru: Ncwms PETERS co.. wnsHmcmN, DA cA NITE STATES CHARLES A. TISTBERG,

PATENT Fries,

OF CHICAGO, ILLINOIS.

SAFETY ATTACHMENT FOR ELEVATORS.

SPECIFICATION forming peut cf Letters Patent 1\o,33:1,035 r.izited sloh 30, 1886.

Application tiled October ISST),

` accompanying drawings.

Fhis invention has for its object to provide au eievator-shaft with horizontally sliding .hatches-one for each iioormwhich hatches are to be opened automatically Iby the ascending and descending cage or plat i'orm, and to close again after such cage `or platform has passed such floor, it being for thepurposc of obviating accidents to persons and to prevent the rapid spreading of a hre in the building I'r-om one story to another.

Myinvention, therefore, consists oi' the novel devices and combinations of devices hereinafter described and specifically claimed.

In the accompanyi ng drawings, Figure l represents a longitudinal vertical section of a pas J' songer or freight elevator having my attachments; Fig. 2, a transverse vertical section, and Fig. 8 a sectional plan, of the same.

Corresponding letters in the severai figures of the drawings designate like parts.

A and I), denote two of the severa-l stories of the building,` C, the elevator-shaft; D D, the guide-standards for the cage or platform E, that is suspended to hoist-rope F.'

G G are two hatches that meet in the center ofthe elev ator-shaft, where they are notched for. clearing the hoist-ropc F. These hatches are arranged to move in guide grooves or strips, and slide into or under the tloor H simultaneonsly in opposite directionswhenever the cage or platform is passing such door on its up or down course, such sliding movement being brought about by an automatic device actuated by the cage orplatform itself as soon as it movesv into close proximity above or below such A hatches, which I will now proceed to describe.

For my purpose the guide-staiulards D D' are grooved ont from a short distance above door H to an equal distance below such loor, and

into each such groove I suspend on a linlr, a, abowshaped bar, I, in amanner that its curX ed Serial No. 1.l,(l-lT. (No model.)

back projects into the elevator-shall', to-be pushed into the-groove ol' the standard by roll ers?) of thepassi ng cage or platfoim E. Levers J are pivoted neartheironterends to brackets C, that are rigid with standards D D', and the outer extremities of these levers .I are pivotally con nccted with the ends ot' bars I, each b v a link, d. The opposite ends of both levers J of each standard I) nearly meet within the lloor l I, where a very short lateral movement of the bar [will impart to these lever ends an increased swinging motion, which motion ol1 all levers I w'ill be simultaneous.

Behind each standard I) or D', and under iloor I'I, are pivotally secured two bell-cranks, I1 L', on a sui'ciently-ditl'ercnt elevation'to clear each other, and the short arnrof each snchbellcrank is in Contact with' the end of one ot' the levers LI, in a manner that the swinging of suchlever will be imparted to such bellcrank, causing the long arm of the same to swing a proportionally-ino1-eased distance, as clearly shown by dotted lines in Fig. 3. A rope or cord,f, secured by any suitable means to the end of the long arm of each bell-crank Il, is passed around a pnlley, M, and its opposite end is secured to one corner of one ot" the two hatches G ina manner that each such'hateh is thus connected with one ot' thehell-cranks of each standard I) and D". 'The opposite or inward corners of the hatches G have ropes g attached, each ol" which passed overa pulley, h, and has suspended to its end a sash weight, N, that moves in ai vertical box, O, built against the side ot' `the standard D D'. The sash-weights N, by their gravity, will hold the hatches closed; but as soon `as the cage or plat-form is moving into close proximity with such hatches the rollers I of such cage or platform will be brought into Contact with the bow-V shaped bars I, and by degrees will force them apart, thereby actuating the leversJ and bellcranks L, which, by their rope connection, will pull the hatches sufficiently apart to allow the cage or platform to fiass, whereby the sashweights N are elevated, andas soon as the cage or platform releases the bars I the weights N by their gravity will move the hatches again toward each other, and will thus close the ele- `vvater-shaft. y This device being appl icd to each floor, accidents, non.r so frequently occurring, are obviateol, and in case a. fire should break out on either iioor it is checked from rapid spreading into the other iioors of the buildin TWhat I claim isl 1. Ihe combination, in an elevator attachinent, with sliding hatches and. bow-shaped barssuspendedintheguide-standards,ofsuitable levers intermediate the bars and hatches, as and for the purposes set forth.

- 2. The combination, in an elevator attachment, with -sliding hatches and bow-shaped barssuspended i'n the guide-standards, of suitable levers intermediate the bars and hatches and counter-balenning-Weights connected to the hatches, es setforth.

3. The combination, in an elevator attachment, .with sliding hatches G G', of bars I, suspended from links n, levers J, pivoted to bars I by links d, bell-cranks L, and cords f, as set forth.

4. The combination, in an elevator attachment, with sliding hatches G G, of bars I, suspended from links a, levers J, pivoted to bars I by links d, bell-cranks L, cords f, and Weights N, :is set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

CHARLES A. VESTBERG.

Witnesses:

RICHARD REINBOLD, FRANK S. BLANCHARD. 

